Assembling molybdenum-doped platinum clusters into a coral-like nanostructure for highly enhanced oxygen reduction
作者机构：Institute of Materials for Energy and EnvironmentInstitute of Biochemical EngineeringCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China Institute for Materials Science and DevicesSchool of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215011PR China Ningbo Research InstituteZhejiang UniversityNingbo 315100China State Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029China
出 版 物：《eScience》 (电化学与能源科学（英文）)
年 卷 期：2024年第4卷第1期
页 面：123-131页
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
基 金：the financial support from the National Natural Science Foundation of China(22379078)
主 题：Pt clusters Mo doping Porous structure Pt-O bond Oxygen reduction reaction
摘 要：Regulating the electronic and geometric structures of electrocatalysts is an effective strategy to boost their catalytic ***,a coral-like nanostructure is assembled with Mo-doped Pt clusters to form a highly active catalyst toward the oxygen reduction reaction(ORR).The advantages of a Mo-doped porous skeleton,grain boundaries,and MoOx species on the Pt cluster surfaces synergistically boost the electrocatalytic *** unique architecture delivers 3.5-and 2.8-fold higher mass and specific activities,respectively,than commercial Pt/*** functional theory calculations reveal that the Mo-doped Pt clusters have an optimized Pt–O bond length of 2.110Å,which weakens the adsorption energy of the intermediate O*to yield great ORR ***,the catalyst shows a decay in the half-wave potential of only 8 mV after 10,000 cycles of accelerated durability *** high stability arises from the increased dissociation energy of Pt atoms and the stable architecture of the coral-like structure of clusters.
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